(70) Williams JE: Review of antiviral and immunomodulating properties of plants of the Peruvian rainforest with a particular emphasis on Una de Gato and Sangre de Grado. Altern Med Rev. 2001 Dec;6(6):567-79. Review.http://www.ncbi.nlm.nih.gov/pubmed/11804547

(99) Pero RW: Method of preparation and composition of a water soluble extract of the bioactive component of the plant species Uncaria for enhancing immune, anti-inflammatory, anti-tumor and DNA repair processes of warm blooded animals. USPTO 7,947,312: May 24, 2011. http://1.usa.gov/1RyQsa7